./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/id_build.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_262df634-b204-48ef-b4b4-c903ca50b624/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_262df634-b204-48ef-b4b4-c903ca50b624/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_262df634-b204-48ef-b4b4-c903ca50b624/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_262df634-b204-48ef-b4b4-c903ca50b624/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invgen/id_build.i -s /tmp/vcloud-vcloud-master/worker/run_dir_262df634-b204-48ef-b4b4-c903ca50b624/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_262df634-b204-48ef-b4b4-c903ca50b624/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 595e0ffd0ff086ae45c2b9536863374b9b9c0fb6 ............................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:54:09,178 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:54:09,180 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:54:09,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:54:09,193 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:54:09,194 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:54:09,195 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:54:09,197 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:54:09,199 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:54:09,200 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:54:09,201 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:54:09,202 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:54:09,202 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:54:09,203 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:54:09,204 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:54:09,209 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:54:09,212 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:54:09,213 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:54:09,217 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:54:09,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:54:09,224 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:54:09,228 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:54:09,229 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:54:09,230 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:54:09,235 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:54:09,236 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:54:09,237 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:54:09,238 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:54:09,239 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:54:09,240 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:54:09,240 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:54:09,241 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:54:09,242 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:54:09,243 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:54:09,244 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:54:09,244 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:54:09,245 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:54:09,245 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:54:09,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:54:09,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:54:09,247 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:54:09,248 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_262df634-b204-48ef-b4b4-c903ca50b624/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:54:09,263 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:54:09,264 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:54:09,265 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:54:09,265 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:54:09,265 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:54:09,265 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:54:09,266 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:54:09,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:54:09,266 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:54:09,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:54:09,266 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:54:09,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:54:09,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:54:09,267 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:54:09,267 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:54:09,268 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:54:09,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:54:09,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:54:09,268 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:54:09,269 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:54:09,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:54:09,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:54:09,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:54:09,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:54:09,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:54:09,270 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:54:09,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:54:09,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:54:09,271 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_262df634-b204-48ef-b4b4-c903ca50b624/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 595e0ffd0ff086ae45c2b9536863374b9b9c0fb6 [2019-11-25 08:54:09,428 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:54:09,437 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:54:09,441 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:54:09,443 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:54:09,443 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:54:09,444 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_262df634-b204-48ef-b4b4-c903ca50b624/bin/uautomizer/../../sv-benchmarks/c/loop-invgen/id_build.i [2019-11-25 08:54:09,500 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_262df634-b204-48ef-b4b4-c903ca50b624/bin/uautomizer/data/cf48f0f58/060eedd3717f43c98f92dceed892f63f/FLAGa18733824 [2019-11-25 08:54:09,838 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:54:09,840 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_262df634-b204-48ef-b4b4-c903ca50b624/sv-benchmarks/c/loop-invgen/id_build.i [2019-11-25 08:54:09,846 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_262df634-b204-48ef-b4b4-c903ca50b624/bin/uautomizer/data/cf48f0f58/060eedd3717f43c98f92dceed892f63f/FLAGa18733824 [2019-11-25 08:54:10,233 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_262df634-b204-48ef-b4b4-c903ca50b624/bin/uautomizer/data/cf48f0f58/060eedd3717f43c98f92dceed892f63f [2019-11-25 08:54:10,236 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:54:10,237 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:54:10,238 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:54:10,238 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:54:10,241 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:54:10,241 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:54:10" (1/1) ... [2019-11-25 08:54:10,244 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fdc58f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:10, skipping insertion in model container [2019-11-25 08:54:10,244 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:54:10" (1/1) ... [2019-11-25 08:54:10,251 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:54:10,264 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:54:10,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:54:10,424 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:54:10,436 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:54:10,503 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:54:10,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:10 WrapperNode [2019-11-25 08:54:10,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:54:10,505 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:54:10,507 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:54:10,507 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:54:10,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:10" (1/1) ... [2019-11-25 08:54:10,517 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:10" (1/1) ... [2019-11-25 08:54:10,533 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:54:10,533 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:54:10,534 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:54:10,534 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:54:10,542 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:10" (1/1) ... [2019-11-25 08:54:10,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:10" (1/1) ... [2019-11-25 08:54:10,543 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:10" (1/1) ... [2019-11-25 08:54:10,543 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:10" (1/1) ... [2019-11-25 08:54:10,545 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:10" (1/1) ... [2019-11-25 08:54:10,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:10" (1/1) ... [2019-11-25 08:54:10,549 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:10" (1/1) ... [2019-11-25 08:54:10,550 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:54:10,551 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:54:10,551 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:54:10,551 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:54:10,552 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_262df634-b204-48ef-b4b4-c903ca50b624/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:54:10,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:54:10,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:54:10,752 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:54:10,752 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-25 08:54:10,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:54:10 BoogieIcfgContainer [2019-11-25 08:54:10,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:54:10,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:54:10,754 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:54:10,757 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:54:10,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:54:10" (1/3) ... [2019-11-25 08:54:10,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e6bcd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:54:10, skipping insertion in model container [2019-11-25 08:54:10,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:10" (2/3) ... [2019-11-25 08:54:10,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e6bcd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:54:10, skipping insertion in model container [2019-11-25 08:54:10,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:54:10" (3/3) ... [2019-11-25 08:54:10,759 INFO L109 eAbstractionObserver]: Analyzing ICFG id_build.i [2019-11-25 08:54:10,768 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:54:10,773 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-25 08:54:10,783 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-25 08:54:10,805 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:54:10,805 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:54:10,806 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:54:10,806 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:54:10,806 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:54:10,806 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:54:10,806 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:54:10,807 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:54:10,819 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-11-25 08:54:10,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-25 08:54:10,828 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:54:10,829 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-25 08:54:10,829 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:54:10,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:10,834 INFO L82 PathProgramCache]: Analyzing trace with hash 29837770, now seen corresponding path program 1 times [2019-11-25 08:54:10,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:54:10,842 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178206385] [2019-11-25 08:54:10,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:54:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:54:10,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:54:10,969 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178206385] [2019-11-25 08:54:10,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:54:10,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-25 08:54:10,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045930524] [2019-11-25 08:54:10,975 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:54:10,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:54:10,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:54:10,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:54:10,986 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2019-11-25 08:54:11,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:54:11,071 INFO L93 Difference]: Finished difference Result 36 states and 49 transitions. [2019-11-25 08:54:11,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:54:11,072 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-11-25 08:54:11,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:54:11,081 INFO L225 Difference]: With dead ends: 36 [2019-11-25 08:54:11,081 INFO L226 Difference]: Without dead ends: 13 [2019-11-25 08:54:11,084 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:54:11,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-25 08:54:11,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 10. [2019-11-25 08:54:11,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-25 08:54:11,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-11-25 08:54:11,110 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 5 [2019-11-25 08:54:11,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:54:11,111 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-11-25 08:54:11,111 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:54:11,111 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-11-25 08:54:11,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-25 08:54:11,112 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:54:11,112 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:54:11,112 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:54:11,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:11,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1390518387, now seen corresponding path program 1 times [2019-11-25 08:54:11,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:54:11,113 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942091679] [2019-11-25 08:54:11,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:54:11,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:54:11,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:54:11,152 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942091679] [2019-11-25 08:54:11,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:54:11,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-25 08:54:11,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266308951] [2019-11-25 08:54:11,154 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:54:11,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:54:11,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:54:11,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:54:11,155 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 4 states. [2019-11-25 08:54:11,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:54:11,192 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2019-11-25 08:54:11,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:54:11,193 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-25 08:54:11,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:54:11,193 INFO L225 Difference]: With dead ends: 13 [2019-11-25 08:54:11,193 INFO L226 Difference]: Without dead ends: 0 [2019-11-25 08:54:11,194 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:54:11,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-25 08:54:11,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-25 08:54:11,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-25 08:54:11,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-25 08:54:11,195 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2019-11-25 08:54:11,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:54:11,195 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:54:11,195 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:54:11,195 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:54:11,195 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-25 08:54:11,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-25 08:54:11,254 INFO L444 ceAbstractionStarter]: For program point L4-3(lines 4 6) no Hoare annotation was computed. [2019-11-25 08:54:11,254 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-25 08:54:11,254 INFO L440 ceAbstractionStarter]: At program point L4-5(lines 1 20) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 0 ULTIMATE.start_main_~i~0) (< ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~nlen~0)) [2019-11-25 08:54:11,254 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-25 08:54:11,254 INFO L447 ceAbstractionStarter]: At program point L19(lines 10 20) the Hoare annotation is: true [2019-11-25 08:54:11,255 INFO L444 ceAbstractionStarter]: For program point L13-2(lines 13 18) no Hoare annotation was computed. [2019-11-25 08:54:11,255 INFO L440 ceAbstractionStarter]: At program point L13-3(lines 13 18) the Hoare annotation is: (<= 0 ULTIMATE.start_main_~i~0) [2019-11-25 08:54:11,255 INFO L444 ceAbstractionStarter]: For program point L13-4(lines 13 18) no Hoare annotation was computed. [2019-11-25 08:54:11,255 INFO L444 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-25 08:54:11,255 INFO L444 ceAbstractionStarter]: For program point L5-1(line 5) no Hoare annotation was computed. [2019-11-25 08:54:11,255 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-25 08:54:11,255 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-25 08:54:11,255 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-25 08:54:11,256 INFO L440 ceAbstractionStarter]: At program point L14-2(lines 14 17) the Hoare annotation is: (and (< ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~nlen~0) (<= 0 ULTIMATE.start_main_~i~0)) [2019-11-25 08:54:11,256 INFO L444 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-25 08:54:11,256 INFO L440 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 0 ULTIMATE.start_main_~i~0) (< ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~nlen~0)) [2019-11-25 08:54:11,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:54:11 BoogieIcfgContainer [2019-11-25 08:54:11,268 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:54:11,269 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:54:11,269 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:54:11,269 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:54:11,270 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:54:10" (3/4) ... [2019-11-25 08:54:11,273 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-25 08:54:11,282 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-25 08:54:11,282 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-25 08:54:11,320 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_262df634-b204-48ef-b4b4-c903ca50b624/bin/uautomizer/witness.graphml [2019-11-25 08:54:11,321 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:54:11,323 INFO L168 Benchmark]: Toolchain (without parser) took 1085.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -118.5 MB). Peak memory consumption was 17.8 MB. Max. memory is 11.5 GB. [2019-11-25 08:54:11,323 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:54:11,324 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -179.0 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:54:11,324 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.44 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:54:11,325 INFO L168 Benchmark]: Boogie Preprocessor took 17.19 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:54:11,325 INFO L168 Benchmark]: RCFGBuilder took 202.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:54:11,326 INFO L168 Benchmark]: TraceAbstraction took 514.38 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 42.4 MB). Peak memory consumption was 42.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:54:11,326 INFO L168 Benchmark]: Witness Printer took 52.21 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:54:11,328 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 266.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -179.0 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.44 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.19 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 202.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 514.38 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 42.4 MB). Peak memory consumption was 42.4 MB. Max. memory is 11.5 GB. * Witness Printer took 52.21 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: (!(0 == cond) && 0 <= i) && i < nlen - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 0 <= i - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: i < nlen && 0 <= i - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: (!(0 == cond) && 0 <= i) && i < nlen - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. Result: SAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 22 SDslu, 16 SDs, 0 SdLazy, 26 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 13 NumberOfFragments, 33 HoareAnnotationTreeSize, 5 FomulaSimplifications, 39 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 138 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...